Optical receptacle and optical module

摘要

An optical receptacle has a first optical surface which receives incidence of light from a light emitting element, a reflecting surface which reflects the light along a substrate, a light separating section which separates light reflected at the reflecting surface into monitor light and signal light, a second optical surface which emits the monitor light toward a light receiving element, and a third optical surface which emits the signal light toward an optical fiber. The light separating section has a plurality of splitting transmissive surfaces which are vertical surfaces with respect to the optical axis of the light reflected at the reflecting surface and a plurality of splitting reflecting surfaces which are inclining surfaces with respect to the optical axis of the light reflected at the reflecting surface. The splitting transmissive surfaces and the splitting reflecting surfaces are alternately disposed in a first direction and in a second direction.

主权项

1. An optical receptacle disposed between an optoelectric converting device and an optical fiber, the optoelectric converting device having a light emitting element and a light receiving element for monitoring light emitted from the light emitting element disposed on a substrate, the optical receptacle optically coupling the light emitting element and an end face of the optical fiber, the optical receptacle comprising:
a first optical surface which receives the light emitted from the light emitting element; a reflecting surface which reflects light incident from the first optical surface in a direction along the substrate; a recess which has an emitting region for emitting part of the light reflected at the reflecting surface and an incidence surface for receiving incidence of the light emitted from the emitting region; a light separating section which is disposed in the emitting region, separates the light reflected at the reflecting surface into monitor light directed to the light receiving element and signal light directed to the end face of the optical fiber, and reflects the monitor light toward the light receiving element while emitting the signal light to the recess; a second optical surface which emits the monitor light separated at the light separating section toward the light receiving element; and a third optical surface which emits the signal light, which has been emitted from the light separating section and then incident from the incidence surface, toward the end face of the optical fiber, wherein the light separating section has a plurality of splitting transmissive surfaces which transmit the light reflected at the reflecting surface and emit the light to the recess and a plurality of splitting reflecting surfaces formed in regions different from regions of the plurality of splitting transmissive surfaces, the splitting reflecting surfaces reflecting the light reflected at the reflecting surface toward the second optical surface, the splitting transmissive surfaces are vertical surfaces with respect to an optical axis of the light reflected at the reflecting surface, the splitting reflecting surfaces are inclining surfaces with respect to the optical axis of the light reflected at the reflecting surfaces, and the splitting transmissive surfaces and the splitting reflecting surfaces are alternately disposed in a first direction which is an inclining direction of the splitting reflecting surfaces and in a second direction which is along the splitting reflecting surfaces and orthogonal to the first direction.